Figure 12.27 in your textbook (shown below) is the phase diagram for CO2. Which statements are true? 73.0 Solid Liquid 5.11 Gas 1.0 -78.5 -56.4 31.1 Temperature (°C) (a) Carbon dioxide If the gas is cooled from 25 °C to -80 °C at 1.00 atm, then it undergoes deposition. The critical point for CO2 occurs at 56.4 °C and 5.11 atm. If pressure is increased from 1.00 atm to 70.0 atm at 10 °C, the CO2 condenses. The most stable phase at 20.0 atm and -95 °C is the solid. The supercritical fluid is the most stable phase at 30.0 atm and 45 °C Pressure (atm)

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**Figure 12.27** in your textbook (shown below) is the phase diagram for CO₂. Which statements are true?

![Phase Diagram](diagram.jpg)

1. **Graph/Diagram Explanation**:
   - **Axes**: The graph plots Pressure (atm) on the y-axis against Temperature (°C) on the x-axis.
   - **Regions**:
     - *Solid*: The area on the left (yellow) represents the solid phase of CO₂.
     - *Liquid*: The middle area (blue) represents the liquid phase.
     - *Gas*: The area on the right represents the gaseous phase.
   - **Critical Point**: Marked at 31.1°C and 73.0 atm, where liquid and gas phases are indistinguishable.
   - Lines separating the phases indicate the conditions under which two phases can coexist (e.g., solid-liquid line).

2. **Statements**:
   - [ ] If the gas is cooled from 25 °C to -80 °C at 1.00 atm, then it undergoes deposition.
   - [ ] The critical point for CO₂ occurs at 56.4 °C and 5.11 atm.
   - [ ] If pressure is increased from 1.00 atm to 70.0 atm at 10 °C, the CO₂ condenses.
   - [ ] The most stable phase at 20.0 atm and -95 °C is the solid.
   - [ ] The supercritical fluid is the most stable phase at 30.0 atm and 45 °C.

Use this information to evaluate which statements above are accurate based on the phase diagram provided.
Transcribed Image Text:**Figure 12.27** in your textbook (shown below) is the phase diagram for CO₂. Which statements are true? ![Phase Diagram](diagram.jpg) 1. **Graph/Diagram Explanation**: - **Axes**: The graph plots Pressure (atm) on the y-axis against Temperature (°C) on the x-axis. - **Regions**: - *Solid*: The area on the left (yellow) represents the solid phase of CO₂. - *Liquid*: The middle area (blue) represents the liquid phase. - *Gas*: The area on the right represents the gaseous phase. - **Critical Point**: Marked at 31.1°C and 73.0 atm, where liquid and gas phases are indistinguishable. - Lines separating the phases indicate the conditions under which two phases can coexist (e.g., solid-liquid line). 2. **Statements**: - [ ] If the gas is cooled from 25 °C to -80 °C at 1.00 atm, then it undergoes deposition. - [ ] The critical point for CO₂ occurs at 56.4 °C and 5.11 atm. - [ ] If pressure is increased from 1.00 atm to 70.0 atm at 10 °C, the CO₂ condenses. - [ ] The most stable phase at 20.0 atm and -95 °C is the solid. - [ ] The supercritical fluid is the most stable phase at 30.0 atm and 45 °C. Use this information to evaluate which statements above are accurate based on the phase diagram provided.
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